Different enantioselective interaction pathways induced by derivatized quinines |
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| Authors: | Uccello-Barretta G Balzano F Quintavalli C Salvadori P |
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| Affiliation: | Centro di Studio del CNR per le Macromolecole Stereordinate ed Otticamente Attive, Dipartimento di Chimica e Chimica Industriale, via Risorgimento 35, 56126 Pisa, Italy. |
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| Abstract: | The stereochemistries in solution of the diastereoisomeric complexes formed by quinines modified at the hydroxyl site (9-O-acetylquinine; 9-O-(3,5-dimethoxyphenylcarbamate)quinine) or quinuclidine nitrogen (N-benzylquininium chloride) and each enantiomer of 2-(3', 5'-dinitrobenzamido)-1-phenylethanol have been compared to those of the free compounds by (1)H NMR investigations. Completely different interaction models, also involving changes of the free state conformations, have been obtained. |
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